projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| cb07625d SH |
1 | /* |
| 2 | * Copyright (c) 2009 Daniel Mack <[email protected]> | |
| 3 | * Copyright (C) 2010 Freescale Semiconductor, Inc. | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify it | |
| 6 | * under the terms of the GNU General Public License as published by the | |
| 7 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 8 | * option) any later version. | |
| 9 | * | |
| 10 | * This program is distributed in the hope that it will be useful, but | |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
| 12 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 13 | * for more details. | |
| 14 | */ | |
| 15 | ||
| 16 | #include <linux/platform_device.h> | |
| 17 | #include <linux/io.h> | |
| 18 | ||
| 19 | #include <mach/hardware.h> | |
| 20 | #include <mach/mxc_ehci.h> | |
| 21 | ||
| 22 | #define USBCTRL_OTGBASE_OFFSET 0x600 | |
| 23 | ||
| 24 | #define MX27_OTG_SIC_SHIFT 29 | |
| 25 | #define MX27_OTG_SIC_MASK (0x3 << MX27_OTG_SIC_SHIFT) | |
| 26 | #define MX27_OTG_PM_BIT (1 << 24) | |
| 27 | ||
| 28 | #define MX27_H2_SIC_SHIFT 21 | |
| 29 | #define MX27_H2_SIC_MASK (0x3 << MX27_H2_SIC_SHIFT) | |
| 30 | #define MX27_H2_PM_BIT (1 << 16) | |
| 31 | #define MX27_H2_DT_BIT (1 << 5) | |
| 32 | ||
| 33 | #define MX27_H1_SIC_SHIFT 13 | |
| 34 | #define MX27_H1_SIC_MASK (0x3 << MX27_H1_SIC_SHIFT) | |
| 35 | #define MX27_H1_PM_BIT (1 << 8) | |
| 36 | #define MX27_H1_DT_BIT (1 << 4) | |
| 37 | ||
| 38 | int mx27_initialize_usb_hw(int port, unsigned int flags) | |
| 39 | { | |
| 40 | unsigned int v; | |
| 41 | ||
| 42 | v = readl(MX27_IO_ADDRESS(MX27_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); | |
| 43 | ||
| 44 | switch (port) { | |
| 45 | case 0: /* OTG port */ | |
| 46 | v &= ~(MX27_OTG_SIC_MASK | MX27_OTG_PM_BIT); | |
| 47 | v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_OTG_SIC_SHIFT; | |
| 48 | ||
| 49 | if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) | |
| 50 | v |= MX27_OTG_PM_BIT; | |
| 51 | break; | |
| 52 | case 1: /* H1 port */ | |
| 53 | v &= ~(MX27_H1_SIC_MASK | MX27_H1_PM_BIT | MX27_H1_DT_BIT); | |
| 54 | v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_H1_SIC_SHIFT; | |
| 55 | ||
| 56 | if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) | |
| 57 | v |= MX27_H1_PM_BIT; | |
| 58 | ||
| 59 | if (!(flags & MXC_EHCI_TTL_ENABLED)) | |
| 60 | v |= MX27_H1_DT_BIT; | |
| 61 | ||
| 62 | break; | |
| 63 | case 2: /* H2 port */ | |
| 64 | v &= ~(MX27_H2_SIC_MASK | MX27_H2_PM_BIT | MX27_H2_DT_BIT); | |
| 65 | v |= (flags & MXC_EHCI_INTERFACE_MASK) << MX27_H2_SIC_SHIFT; | |
| 66 | ||
| 67 | if (!(flags & MXC_EHCI_POWER_PINS_ENABLED)) | |
| 68 | v |= MX27_H2_PM_BIT; | |
| 69 | ||
| 70 | if (!(flags & MXC_EHCI_TTL_ENABLED)) | |
| 71 | v |= MX27_H2_DT_BIT; | |
| 72 | ||
| 73 | break; | |
| 74 | default: | |
| 75 | return -EINVAL; | |
| 76 | } | |
| 77 | ||
| 78 | writel(v, MX27_IO_ADDRESS(MX27_USB_BASE_ADDR + USBCTRL_OTGBASE_OFFSET)); | |
| 79 | ||
| 80 | return 0; | |
| 81 | } | |
| 82 |